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Károly Fogl, also known as Károly Fogoly, "Károly Újpesti" and "Fogl II" (19 January 1895 – 12 January 1969) was a Hungarian footballer who played for Újpest FC, as well as representing the Hungarian national football team at the 1924 Summer Olympics.

Fogl was born in Újpest, Budapest, Hungary[citation needed]. Between 1918 and 1929 he played 50 games and scored 2 goals for the Hungarian national team as a right defender. Together with his younger brother, József Fogl III, the two Fogls formed the legendary "Fogl-gate" (Fogl-gát in Hungarian), an extremely powerful and tough defending formation for more than a decade.

Fogl II won the 1929-30 season with Újpest and served as a captain of the club for a decade.

After his player career, he went on to coach Sportklub Sofia and the Bulgarian national football team. Later he managed Juventus Bucuresti and in 1937 he led Győri ETO to the Hungarian top division NB I for the first time in the club's history. He joined Warta Poznań as a manager in 1938, leading the club to their second national championship title in 1947. He died on 12 January 1969 in Budapest.